I'm attempting to localise a game into French. Using other games as a guide for my less than perfect French grammar, I notice that sometimes a phrase that would use the imperative in English uses the ...

In English it is sometimes permissible (but not necessarily (always?) proper grammar) to "split" a verb infinitive with an adverb. For example, consider the placement of "quickly" in the two following ...

One is used impersonally (il faut faire qqch) whereas the other allows a personal pronoun (quelqu'un doit faire quelque chose).
However, il faut que je le fasse means I have to do it and je dois le ...

When learning French, I was taught that an infinitive form, e.g. jouer, meant “to play” (or whatever). That is, the English translation of the verb was preceded by to.
The word à also means “to.” But ...